Best UML Products in 2025

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.

Key PlantUML features:

Simple Syntax Quick Diagram Creation Version Control Friendly Integrations

Open Source

A cloud-based diagram maker for companies, teams, and you.

Key Cacoo features:

Collaboration User-Friendly Interface Extensive Template Library Integration Options

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Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.

Key Modelio features:

Open Source Wide Range of Modeling Standards Extensible Built-In Code Generation

Create diagrams and visualizations using text and code.

Key Mermaid features:

Ease of Use Integration Automated Diagrams Cost-effective

Open Source

UML Designer provides a set of common diagrams to work with UML 2.5 models.

Key UML Designer features:

Open Source Integration with Eclipse Comprehensive Features Community Support

Diagramo is an online flowchart software - diagrams (create, edit and share).

Key Diagramo features:

Open Source Web-Based Collaboration Intuitive Interface

BOUML : An UML toolbox running under Linux, MacOS X and Windows to specify and generate code in C++, Java, Php, Python, Idl and MySQL.

Key BOUML features:

Lightweight and Fast Cross-Platform Compatibility Extensible Free to Use

MagicDraw | No Magic is one of the most respected providers of standards-compliant modeling, simulation and analysis solutions in the industry.

Key MagicDraw features:

Comprehensive Modeling Support Collaboration Features Integration and Compatibility Customization and Scripting

ARIS Express is based on the proven ARIS methodology and industry standards.

Key ARIS Express features:

Free of Cost User-Friendly Interface Quick Start Basic Functionalities

StarUML.

Key StarUML features:

User-Friendly Interface Cross-Platform Support Extensibility Wide Range of Diagram Types

The IYOPRO BPM Platform is a comprehensive online BPM Suite based on the BPMN 2.0 standard. The IYOPRO PLM Components combine innovative process management with solid PDM technology.

Key IYOPRO features:

User-Friendly Interface Cloud-Based Solution Comprehensive BPMN Support Collaboration Features

Online diagramming application.

Key draw.io features:

Free User-Friendly Interface Collaboration Integrations

Open Source

The scxml state machine to c++ compiler.

Key scxmlcc features:

Open Source Cross-platform compatibility Standards-based Community support

Enterprise Explorer provides professional business process modeling on Microsoft platforms.

Key Enterprise Explorer features:

Comprehensive Data Integration User-Friendly Interface Scalability Real-Time Analytics